摘要
浮箱和背拉杆是中低水头船闸人字门提高抗扭能力的有效措施,但是考虑二者共同预应力的研究工作较少。基于江苏某在建船闸人字门,建立人字门空间薄壁结构有限元模型,对比设置不同浮箱的人字门抗扭能力,提出了较为合理的浮箱设置方案。在此基础上,研究不同背拉杆布置方式下人字门的抗扭能力,提出一种背拉杆预应力的改进优化模型,使施加预应力后闸门的整体抗扭能力得到更大提高。研究结果表明:采用U形浮箱及预应力背拉杆进行人字门组合抗扭的方案,可有效提高闸门的整体抗扭能力。研究方法和研究成果可为中低水头船闸人字门的设计提供参考。
Buoyancy tank and back tie rod are effective measures to improve the torsional resistance of miter gate of medium and low head ship lock.There is less research work considering both pontoon and back tie prestress.Based on the miter gate of a ship lock under construction in Jiangsu Province,a finite element model of miter gate space thin-walled structure is established in this paper.The torsion resistance of miter gates with different pontoons is calculated and compared,and a more reasonable pontoon setting scheme is proposed.On this basis,the torsion resistance of miter gate with different arrangement of back tie rod is studied,and an improved optimization model of back tie rod prestress is proposed,which can improve the overall anti-torsional ability of the gate after the prestress is applied.The research results show that the combined torsion resistance scheme of miter gate with U-shaped pontoon and prestressed back tie rod proposed in this paper can effectively improve the overall torsion resistance of the gate.The research methods and results can provide a reference for the design of miter gate of medium and low head ship lock.
作者
项博良
崔岩松
张燎军
丁典典
XIANG Boliang;CUI Yansong;ZHANG Liaojun;DING Diandian(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,China;Suqian Port and Shipping Development Center,Suqian 223800,China)
出处
《水运工程》
北大核心
2023年第4期137-142,共6页
Port & Waterway Engineering
基金
江苏省交通运输厅科技项目(2020QD28)。
关键词
中低水头船闸
人字门
浮箱
背拉杆
抗扭刚度
改进预应力优化模型
medium and low head ship lock
miter gate
buoyancy tank
back tie rod
torsion resistance
improved prestress optimization model
作者简介
项博良(1997-),男,硕士研究生,主要从事水工结构数值仿真研究;通讯作者:张燎军(1962-),男,教授,博导,主要从事水工结构数值仿真研究。E-mail:ljzhang@hhu.edu.cn。
